Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755395Ab3CELnR (ORCPT ); Tue, 5 Mar 2013 06:43:17 -0500 Received: from devils.ext.ti.com ([198.47.26.153]:44464 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753403Ab3CELnP (ORCPT ); Tue, 5 Mar 2013 06:43:15 -0500 From: "Vishwanathrao Badarkhe, Manish" To: , , CC: , , , , Subject: [PATCH V4] i2c: davinci: update to devm_* API Date: Tue, 5 Mar 2013 17:14:45 +0530 Message-ID: <1362483885-16561-1-git-send-email-manishv.b@ti.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4497 Lines: 155 Update the code to use devm_* API so that driver core will manage resources. Signed-off-by: Vishwanathrao Badarkhe, Manish --- Changes since V3: - Use devm_ioremap_resource API instead of devm_request_and_ioremap. - Update commit message. - Rebase on top of v3.9-rc1 linus tree. Changes since V2: - if "devm_request_and_ioremap" fails return -EADDRNOTAVAIL. instead of -EBUSY. Changes since V1: - Rebase on top of v3.8-rc6 of linus tree. - Apply devm operation on clk_get. :100644 100644 7d1e590... 1fb5a22... M drivers/i2c/busses/i2c-davinci.c drivers/i2c/busses/i2c-davinci.c | 49 +++++++++++-------------------------- 1 files changed, 15 insertions(+), 34 deletions(-) diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c index 7d1e590..1fb5a22 100644 --- a/drivers/i2c/busses/i2c-davinci.c +++ b/drivers/i2c/busses/i2c-davinci.c @@ -643,7 +643,7 @@ static int davinci_i2c_probe(struct platform_device *pdev) { struct davinci_i2c_dev *dev; struct i2c_adapter *adap; - struct resource *mem, *irq, *ioarea; + struct resource *mem, *irq; int r; /* NOTE: driver uses the static register mapping */ @@ -659,17 +659,11 @@ static int davinci_i2c_probe(struct platform_device *pdev) return -ENODEV; } - ioarea = request_mem_region(mem->start, resource_size(mem), - pdev->name); - if (!ioarea) { - dev_err(&pdev->dev, "I2C region already claimed\n"); - return -EBUSY; - } - - dev = kzalloc(sizeof(struct davinci_i2c_dev), GFP_KERNEL); + dev = devm_kzalloc(&pdev->dev, sizeof(struct davinci_i2c_dev), + GFP_KERNEL); if (!dev) { - r = -ENOMEM; - goto err_release_region; + dev_err(&pdev->dev, "Memory allocation failed\n"); + return -ENOMEM; } init_completion(&dev->cmd_complete); @@ -699,22 +693,24 @@ static int davinci_i2c_probe(struct platform_device *pdev) dev->pdata = &davinci_i2c_platform_data_default; } - dev->clk = clk_get(&pdev->dev, NULL); + dev->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(dev->clk)) { r = -ENODEV; goto err_free_mem; } clk_prepare_enable(dev->clk); - dev->base = ioremap(mem->start, resource_size(mem)); - if (!dev->base) { - r = -EBUSY; - goto err_mem_ioremap; + dev->base = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(dev->base)) { + r = PTR_ERR(dev->base); + dev_err(&pdev->dev, "I2C region already claimed\n"); + goto err_unuse_clocks; } i2c_davinci_init(dev); - r = request_irq(dev->irq, i2c_davinci_isr, 0, pdev->name, dev); + r = devm_request_irq(&pdev->dev, dev->irq, i2c_davinci_isr, 0, + pdev->name, dev); if (r) { dev_err(&pdev->dev, "failure requesting irq %i\n", dev->irq); goto err_unuse_clocks; @@ -723,7 +719,7 @@ static int davinci_i2c_probe(struct platform_device *pdev) r = i2c_davinci_cpufreq_register(dev); if (r) { dev_err(&pdev->dev, "failed to register cpufreq\n"); - goto err_free_irq; + goto err_unuse_clocks; } adap = &dev->adapter; @@ -740,25 +736,17 @@ static int davinci_i2c_probe(struct platform_device *pdev) r = i2c_add_numbered_adapter(adap); if (r) { dev_err(&pdev->dev, "failure adding adapter\n"); - goto err_free_irq; + goto err_unuse_clocks; } of_i2c_register_devices(adap); return 0; -err_free_irq: - free_irq(dev->irq, dev); err_unuse_clocks: - iounmap(dev->base); -err_mem_ioremap: clk_disable_unprepare(dev->clk); - clk_put(dev->clk); dev->clk = NULL; err_free_mem: put_device(&pdev->dev); - kfree(dev); -err_release_region: - release_mem_region(mem->start, resource_size(mem)); return r; } @@ -766,7 +754,6 @@ err_release_region: static int davinci_i2c_remove(struct platform_device *pdev) { struct davinci_i2c_dev *dev = platform_get_drvdata(pdev); - struct resource *mem; i2c_davinci_cpufreq_deregister(dev); @@ -774,16 +761,10 @@ static int davinci_i2c_remove(struct platform_device *pdev) put_device(&pdev->dev); clk_disable_unprepare(dev->clk); - clk_put(dev->clk); dev->clk = NULL; davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, 0); - free_irq(dev->irq, dev); - iounmap(dev->base); - kfree(dev); - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(mem->start, resource_size(mem)); return 0; } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/